The value assignment of candidate Standard Reference Material (SRM) 57b Silicon Metal provided an opportunity to develop an alkali reaction procedure as a precursor to borate fusion for the preparation of test specimens from the metal powder for X-ray fluorescence spectrometry (XRF). Suggested for this purpose by Blanchette (Adv. X-Ray Anal., 45, 415, 2002), the alkali reaction uses LiOH·H2O to...

This study employs Particle Induced X-ray Emission (PIXE) analytical technique for the analysis of elemental concentrations in the roadside soils in Calabar, Nigeria, in order to ascertain the levels of heavy metals in relation to traffic density. Twenty one elements, viz., Al, Si, P, Cl, K, Ca, Ti, V, Cr, Mn, Fe, Ni, Cu, Zn, Ga, As, Rb, Sr, Zr, Nb and Pb with concentrations (in ppm), ranging f...

The article studies the tribological properties of multicomponent nanostructured coatings Zr-ZrN-(Zr,Cr,Al)N and Zr-ZrN-(Zr,Mo,Al)N, as well wear resistance fracture behaviour cutting tools with mentioned during turning Inconel 718 alloy. Ti–TiN-(Ti,Cr,Al)N coating was also considered a reference coating. While is characterized by high hardness, it demonstrated coefficients friction (COF) at te...

Herein, a novel Cu-MoO3/g-C3N4 hybrid nanocomposite was successfully synthesized by a two-step strategy of one-pot pyrolysis followed by the impregnation method. The structure, phase, morphology and electronic environment of MoO3, g-C3N4 and Cu in the composite were determined by various characterization methods. The oxygen vacancies of MoO3 were ascertained by UV-DRS, Raman, and XPS analysis. ...

BACKGROUND Hydrazones and their metal complexes were heavily studied due to their pharmacological applications such as antimicrobial, anticonvulsant analgesic, anti-inflammatory and anti-cancer agents. This work aims to synthesize and characterize novel complexes of VO(2+), Co(2+), Ni(2+), Cu(2+), Zn(2+), Zr(4+)and Pd(2+) ions with oxalo bis(2,3-butanedione-hydrazone). Single crystals of the li...